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Finding the Fourth Proportional to 217,323, 299,906.55 and 126,741.51

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Solution

The fourth proportional to 217,323, 299,906.55 and 126,741.51 is: 174,903.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,323 : 299,906.55 = 126,741.51 : x
  2. Step 2: Convert to fraction form
    217,323/299,906.55 = 126,741.51/x
  3. Step 3: Cross multiply
    217,323x = 299,906.55 × 126,741.51
  4. Step 4: Simplify right side
    217,323x = 38,010,609,005.89
  5. Step 5: Solve for x
    x = 38,010,609,005.89/217,323
  6. Step 6: Final answer
    x = 174,903.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.